export default /* glsl */`
uniform vec3 topColor;
uniform vec3 bottomColor;
in vec2 vUv;

void main()
{
  float ratio = pow(1.0 - vUv.y, 0.75); // sqrt(vUv.y);
  vec3 color = mix(bottomColor, topColor, ratio);
  gl_FragColor = vec4( color, ratio ); // vUv.y
}
    `;
